September 2017
Beginner to intermediate
290 pages
6h 58m
English
Content preview from Mastering Assembly Programming
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Far pointers
It may be relatively safe to say that far pointers belong to the past when it comes to the application development level; however, it would not be right not to mention them here, as, after all, there are a few useful things we can do with it. Putting it simply, a far pointer combines a segment selector and an offset into the segment. Originating in the era of 16-bit modes of operation, surviving the 32-bit protected mode, far pointers have made it to the long mode, although they are hardly relevant, as, especially in long mode, all memory is considered to be a flat array and we are hardly going to use them.
The instructions used (some are obsolete) for loading a far pointer into the segment register: general-purpose register ...
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